Information from the overseas supply chain reveals April sales increasing 113% year over year. Although White says sales for April may - technically - be below the "historical trend," quarter-on-quarter growth could ultimately still be realized.

The “barometer” he’s compiled of companies that supply Apple out of Taiwan shows Apple sales may have fallen by 7.5%, below an historical average for sales to rise 0.4% from March to April. But given the 35% increase in sales in March for his barometer, versus a 24% average, it’s still possible that the full quarter could rise by the historical 5%, he thinks.

Joining a barrage of trading advice related to Apple today, Wall Street heavyweight Goldman Sachs Group released a note to investors urging the purchase of options to "bet on volatility in the shares before the June 6th Developers Conference." According to the findings of historical analysis, the WWDC generally moves Apple stock more than the company's earnings reports.

"The conference sends Apple shares down an average of 5.4 percent over five trading days, and Apple volatility is inexpensive,” according to Katherine Fogertey and John Marshall, equity-derivatives strategists at Goldman Sachs.